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Showing 1–20 of 20 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cessation-Phase Varenicline Clear all
Completed Phase 2 Interventional Results available

Treatment of Smoking Among Individuals With PTSD

NCT00937235
View directory record Official record
Conditions
Cigarette Smoking, Nicotine Dependence, Post-traumatic Stress Disorder, Tobacco Use Disorder
Interventions
Varenicline, Medication Management Counseling, Prolonged Exposure
Drug · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 75 Years
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 13, 2017 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study To Evaluate Cardiac Assessments Following Different Treatments Of Smoking Cessation Medications In Subjects With And Without Psychiatric Disorders.

NCT01574703
View directory record Official record
Conditions
Smoking Cessation
Interventions
placebo, varenicline tartrate, bupropion hydrochloride, Nicotine Replacement Therapy Patch
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
4,595 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
65
States / cities
Mobile, Alabama • Encino, California • Escondido, California + 54 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Results available

A Multi-National Study To Assess How Effective And Safe The Smoking Cessation Medicine Varenicline Is In Smokers Who Have Already Tried Varenicline In The Past As A Prescription Medicine From Their Usual Healthcare Provider

NCT01244061
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
498 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
8
States / cities
Los Angeles, California • DeLand, Florida • Lexington, Kentucky + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2014 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Results available

Varenicline for Nicotine Vaping Cessation in Adolescents

NCT05367492
View directory record Official record
Conditions
Vaping, Nicotine Dependence
Interventions
Double Blind Varenicline, Double Blind Placebo, QuitVaping, This Is Quitting
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 25 Years
Enrollment
261 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Results available

A Study To Evaluate The Efficacy And Safety Of Varenicline Compared To Placebo For Smoking Cessation Through Reduction

NCT01370356
View directory record Official record
Conditions
Smoking Cessation
Interventions
Varenicline Tartrate, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
1,510 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
14
States / cities
Encino, California • Newport Beach, California • Jacksonville, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 31, 2014 · Synced Sep 21, 2026, 1:46 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Endothelial Function and Autonomic Regulation After Short-term Smoking Cessation: Varenicline Versus Placebo

NCT00673595
View directory record Official record
Conditions
Smoking
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 15, 2012 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 2Phase 3 Interventional Results available

PRecision Interventions for SMoking in the SCCS

NCT03521141
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Nicotine patch, Varenicline, Nicotine metabolism, Genetically-informed lung cancer risk score, NCI "Clearing the Air"
Drug · Genetic · Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 31, 2020 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Results available

Randomized Study Comparing the Efficacy and Safety of Varenicline Tartrate to Placebo in Smoking Cessation When Subjects Are Allowed to Set Their Own Quit Date

NCT00691483
View directory record Official record
Conditions
Smoking Cessation
Interventions
placebo, varenicline
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
659 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
12
States / cities
Litchfield Park, Arizona • Los Angeles, California • Santa Ana, California + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 19, 2015 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 2 Interventional Results available

Varenicline for Methamphetamine Dependence

NCT01365819
View directory record Official record
Conditions
Methamphetamine Dependence, Substance Abuse, Methamphetamine Abuse
Interventions
Varenicline, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effects of Chantix on Relapse Prevention for Smoking Cessation

NCT00948649
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Placebo, Varenicline
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2010 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study Evaluating The Safety And Efficacy Of Varenicline and Bupropion For Smoking Cessation In Subjects With And Without A History Of Psychiatric Disorders

NCT01456936
View directory record Official record
Conditions
Smoking Cessation
Interventions
Placebo, varenicline tartrate, bupropion hydrochloride, Nicotine Replacement Therapy Patch
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
8,144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
77
States / cities
Mobile, Alabama • Phoenix, Arizona • Encino, California + 61 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2016 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Not applicable Interventional Results available

Nicotine Withdrawal Symptoms and Smoking Relapse

NCT01511614
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Transcranial Direct Current Stimulation, sham, Nicotine patch, Placebo patch, Varenicline Pill, Placebo pill, Motivational Interviewing
Device · Drug · Behavioral
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 65 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 30, 2024 · Synced Sep 21, 2026, 1:46 AM EDT
Withdrawn Phase 1 Interventional

Stage Ib Trial of mSMART With Varenicline

NCT03069768
View directory record Official record
Conditions
Nicotine Dependence
Interventions
mSMART, Chantix
Device · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 16, 2018 · Synced Sep 21, 2026, 1:46 AM EDT
Not listed Not applicable Interventional

Stage Ib Trial of mSMART for Smoking Cessation Medication Adherence

NCT02635919
View directory record Official record
Conditions
Nicotine Dependence
Interventions
mSMART
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 2, 2018 · Synced Sep 21, 2026, 1:46 AM EDT
Recruiting Phase 4 Interventional

Varenicline for Smoking Reduction in Veterans Not Ready To Quit

NCT06966362
View directory record Official record
Conditions
Veterans, Tobacco Use Disorder, Cigarette Smoking, Tobacco Dependence
Interventions
Motivation-Phase Varenicline, Motivation-Phase Nicotine Mini-Lozenge, Cessation-Phase Combination Nicotine Replacement Therapy (NRT), Cessation-Phase Varenicline, Motivation-Phase Counseling, Cessation-Phase Counseling
Drug · Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
21 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
4
States / cities
San Diego, California • Minneapolis, Minnesota • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 3 Interventional Results available

Smoking Cessation Study for Patients With Schizophrenia or Schizoaffective Disorder

NCT00644969
View directory record Official record
Conditions
Smoking Cessation
Interventions
placebo, varenicline (CP-526,555)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
9
States / cities
Aurora, Colorado • Farmington, Connecticut • New Haven, Connecticut + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2011 · Synced Sep 21, 2026, 1:46 AM EDT
Withdrawn Phase 4 Interventional

Treating Schizophrenic Smokers: Effects on Craving, Cues and Withdrawal

NCT00781755
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
varenicline, Adaptation of Motivational Interviewing
Drug · Behavioral
Lead sponsor
VA Boston Healthcare System
Federal
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Brockton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 3, 2015 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Single Dose Study Investigating the Absorption and Elimination as Well as the Tolerability of Varenicline Transdermal Delivery System (e.g., a Patch) as Compared to Oral Varenicline in Adult Smokers.

NCT00661765
View directory record Official record
Conditions
Smoking Cessation
Interventions
varenicline tartrate, varenicline free base
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Apr 22, 2009 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Results available

A Study of Varenicline for Prevention of Relapse to Smoking in Patients With Schizophrenia or Bipolar Disorder

NCT00621777
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Bipolar Disorder, Smoking
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
247 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
10
States / cities
Birmingham, Alabama • Bloomington, Indiana • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2017 · Synced Sep 21, 2026, 1:46 AM EDT
Completed Phase 4 Interventional Results available

Safety And Efficacy Of 12 Weeks Of Varenicline For Smoking Cessation In Smokers With Depression

NCT01078298
View directory record Official record
Conditions
Smoking Cessation, Depression
Interventions
varenicline, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
525 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
17
States / cities
Garden Grove, California • Sherman Oaks, California • Aurora, Colorado + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2013 · Synced Sep 21, 2026, 1:46 AM EDT